US3863437A - Electromagnetic buzzer for a watch with tongue adjustment means - Google Patents

Electromagnetic buzzer for a watch with tongue adjustment means Download PDF

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Publication number
US3863437A
US3863437A US479713A US47971374A US3863437A US 3863437 A US3863437 A US 3863437A US 479713 A US479713 A US 479713A US 47971374 A US47971374 A US 47971374A US 3863437 A US3863437 A US 3863437A
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US
United States
Prior art keywords
tongue
support arm
buzzer
set forth
block
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US479713A
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English (en)
Inventor
Mandred Hans Barth
Adolf Sedlak
Walter E Sodler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Timex Group USA Inc
Original Assignee
Timex Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Timex Corp filed Critical Timex Corp
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Publication of US3863437A publication Critical patent/US3863437A/en
Assigned to CHASE MANHATTAN BANK, N.A., THE reassignment CHASE MANHATTAN BANK, N.A., THE SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FREDERIKSPLEIN HOLDING 1970 B.V., TIMEX CLOCK COMPANY, A DE CORP., TIMEX COMPUTERS LTD., A DE CORP., TIMEX CORPORATION, A DE CORP., TIMEX ENTERPRISES, INC., A BERMUDA CORP., TIMEX GROUP LTD., A BERMUDA CORP., TIMEX MEDICAL PRODUCTS LTD., A BERMUDA CORP., TIMEX N.V.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C21/00—Producing acoustic time signals by electrical means
    • G04C21/02—Constructional details
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C21/00—Producing acoustic time signals by electrical means
    • G04C21/16—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times
    • G04C21/34—Devices on watches or similar portable timepieces
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G13/00—Producing acoustic time signals
    • G04G13/02—Producing acoustic time signals at preselected times, e.g. alarm clocks
    • G04G13/021—Details

Definitions

  • a buzzer for a watch has an electromagnet system at- Conn. tached to a support arm, one end of which can be fixed in the watch and the other, free end of which [22] Wed: June 1974 can be adjusted relative to a membrane with a first ad- [21] Appl, N 479,713 justing element which is in a contacting relationship with the watch.
  • the buzzer has a tongue, clamped tightly on one side, which can be excited to oscillate [30] Fol-mg Apphcauon Pnomy Data by the electromagnet system and which strikes against July 5, 1973 Germany 2334153 the membrane eitherdirectly or indirectly The loca. tion of the tongue relative to the electromagnet system U-S. Cl. is adjustable means of a second adjusting element Int. Cl. acting on it in the vicinity of the clamped end of Search of the tongue [56] References Cited I 15 Claims, 4 Drawing Figures UNITED STATES PATENTS 2,786,326 3/1957 Junghans et al. 58/575 WATCH WITH TONGUE ADJUSTMENT MEANS Primary Examiner-George H. Miller, Jr.
  • the present invention relates to an improved electromagnetic buzzer for a watch, having a membrane, especially in the form of the watch crystal. More particularly it relates to an improved adjustment system for the buzzer.
  • an adjustable yoke attached in the watch, extends over the support arm in the area of the block and is in a contacting relationship with the support arm by means of a blade. Tightening the yoke causes the support arm to press against the pin, which however necessitates also moving the block toward the pin.
  • an adjusting screw Located in a tapped hole in the block at right angles to the plane of the tongue is an adjusting screw, whose one conical end is in a contacting relationship with the tongue in the vicinity of the clamping point and whose other end extends through a hole in the support arm in order to permit it to be rotated. This adjusting screw permits the tongue to be adjusted relative to a pole surface of a electromagnet of the electromagnet system facing it, which is also necessary.
  • the known design has various disadvantages:
  • the tongue cannot be adjusted relative to the electromagnet system prior to installation of the buzzer in the watch, since the location of the tongue relative to the electromagnet system is altered during the adjustment of the buzzer relative to the pin on the watch crystal, which is necessary after installation.
  • the location of the block also changes, and with it the location of the adjusting screw; however the change in location of the electromagnet system is greater than that of the tongue, so that the gap between an anchor sheet fixed to the tongue and the electromagnet system is altered.
  • a further disadvantage is that, as a result of the contacting relationship of the adjusting screw in the direct vicinity of the firmly clamped end of the tongue, :1 very slight rotation of the adjusting screw results in large alteration of the gap between tongue and electromagnet system. Finally, during operation the tip of the adjusting screw, which is in a contacting relationship with the tongue, is permanently deformed, whereby the gap between tongue and electromagnet system is also altered during the course of time.
  • the object of the invention to improve an electromagnetic buzzer of the type mentioned at the outset in such a manner that it can be more easily adjusted than the above described known design and that the adjusted condition can be maintained during operation.
  • the buzzer be designed in such a manner that the first adjusting element (for adjusting the buzzer relative to the membrane) is in a contacting relationship with a movable end of the support arm on the opposite side of the electromagnet system from the fixed end of the support arm, and in that the second adjusting element (for adjusting the tongue relative to the electromagnet system) acts on the tongue through reduction means.
  • the reduction means are comprising a lever, one end of which is fixed relative to the supporting arm in the area of the fixed end of the tongue, whereby the second adjusting element is in a contacting relationship with its other end and is in an operative connection with the tongue between its ends.
  • two embodiments proposed in accordance with the invention utilize a characteristic of the above mentioned, known design, as they both provide a firmly clamped block arranged between support arm and tongue on the opposite side of the electromagnet system from the free end of the support arm.
  • the lever (which forms the reduction means) is located on the side of the support arm facing away from the electromagnet system, while the second adjusting element is in a contacting relationship with the supporting arm between the first adjusting element and the electromagnet system; in addition, a pin, extending through the support arm, is slidably located in the block roughly at right angles to the tongue; one end of this pin is in a contacting relationship with the lever and the other end with the tongue. Since the second adjusting element connects the free end of the lever with the support arm at a point which is located between the first adjusting element and the fixed end of the support arm, adjustment of the entire buzzer with the aid of the first adjusting element does not alter the gap between tongue and electromagnet system.
  • alteration of the second adjusting element is not transmitted to the tongue by means of the support arm and the block as a result of the slidable pin, alteration of the setting of the gap between tongue and electromagnet system does not result in alteration of the location of the support arm.
  • the design of the first variant also permits the block to be employed as the base element of the buzzer, and the watch to be attached to it, whereby it supports the support arm and the tongue.
  • the lever (forming the reduction means) is arranged between tongue and block, and the second adjusting element is in a contacting relationship with the block.
  • the block is viewed as being rigid, which is permissible within the scope of the invention, it can clearly be seen that an alteration of the setting of the second adjusting element, i.e., the location of the tongue relative to the electromagnet system, will not result in a change in the location of the support arm.
  • an adjustment of the first adjusting element will cause the support arm to move relative to the membrane as a whole, including block and tongue, so that, in the same manner as with the above discussed first variant, it is possible to install the buzzer, pre-adjusted relative to the gap between tongue and electromagnet system, in the watch as a sub-assembly whereby it must then only be adjusted relative to the membrane with the aid of the first adjusting element.
  • an elastic element especially in the form of an elastic block or a spring washer, between the free end of the support arm and the watch (e.g., a plate), and to design the first adjusting element as a screw extending through the support arm and the elastic element.
  • FIG. 1 shows a cross section through a first embodiment of a buzzer according to the invention, made at right angles to the dial of a wristwatch;
  • FIGS. 2 to 4 show corresponding cross sections through three other, largely similar embodiments.
  • FIG. 1 shows a portion of a watch crystal 10, mounted in a support 12 and having a pin 14 formed on its inside, said pin 14 extending through a hole 16 in a dial 18.
  • Watch crystal is most practically of plastic.
  • a plate, designated 20 as a whole, is shown, to which the buzzer according to the invention is attached.
  • This plate has a mounting block 22 with a mounting flange 24, which serves to fix the mounting block to plate 20 by means of a screw 26.
  • the mounting block has two holes 28 and 30; the former serves to fix a support arm 32 and a lever 34 to one side of mounting block 22 as well as a tongue 36 to the other side by means of a screw 38 and a threaded sleeve 40.
  • Slidably arranged in the second hole 30 is a pin 42, whose ends are in a contacting relationship with lever 34 on one side and tongue 36 on the other.
  • an electromagnet system consisting of an electromagnet comprising one or two coils 44 and a core 46 as well as two permanent magnets 48 and 50.
  • This electromagnet system further includes an armature plate 52, which is fixed on tongue 36.
  • the end surface of core 46 facing the anchor plate, which forms one pole of electromagnet 44, 46, is lined with a plastic film 54 in order to prevent the anchor plate, and thus tongue 36, from adhering to the electromagnet.
  • the movable end 32' of support arm 32 can be adjusted relative to the clock, in the illustrated case relative to plate 20, with the aid of a system adjusting screw 56, which engages a tapped hole 58 in plate 20. Also located between support arm 32 and plate 20 is a spring washer 60, serving as a return spring for the support arm.
  • the movable end 32 of support arm 20 also carries an indicated printed circuit board 62, which bears the oscillator circuit. This serves to excite electromagnet 44, 46 with the natural frequency of tongue 36, which is also the natural frequency or a whole-number multiple of the natural frequency of watch crystal 10.
  • the free end 34 of lever 34 can be adjusted relative to support arm 32 by means of a tongue adjusting screw 64.
  • the entire buzzer can be pre-adjusted prior to installation in the wristwatch, with respect to both the gap between anchor plate 52 and one pole of electromagnet 44, 46.
  • This adjustment is made with the aid of tongue adjusting screw 64.
  • the displacement of the free end 34' of lever 34 is transferred to tongue 36 greatly reduced, so that the tongue can'easily be adjusted very precisely relative to the electromagnet with the aid of tongue adjusting screw 64.
  • FIGS. 2-4 While in the embodiment of the design according to the invention shown in FIG. 1 mounting block 22 is fixedly attached in the watch, the embodiments shown in FIGS. 2-4 have a mounting block 22a and 2212 which is attached to a support arm 32a and can move with it. Since the embodiments according to FIGS. 2-4 are similar to one another and coincide largely with the embodiment according to FIG. I, only the differing parts shall be described below; individual parts not mentioned on the basis of FIGS. 2-4 are provided with the same reference numbers as the corresponding parts in FIG. 1; the differing parts also have the same reference numbers, however with the letters a, b
  • the entire buzzers of the embodiments according to FIGS. 2-4 are attached to plate a with support arm 32a by means of a screw 26a.
  • Mounting block 22a has a slot 70, thus forming a lever 34a which replaces the lever 34 in FIG. 1. Its free end 340 is subject to the effect of a tongue adjusting screw 64a, which extends through a hole 72 in support arm 32a.
  • the adjustment movement of this adjusting screw is again transmitted reduced to tongue 36 by lever 34a, thanks to a rib 74 which provides a lineshaped contacting relationship between lever 34a and tongue 36.
  • to the left of the rib mounting block 220 has a notch 76, which results in a constriction at the root of lever 34a, around which the lever can be swivelled with the aid of tongue adjusting screw 64a.
  • lever 34a could also be a separate member and not part of mounting block 22a.
  • lever 34b is designed as a separate member in the form of a stamped strip of sheet metal and in that the return spring for support arm 32a is in the form of a resilient block 60a.
  • lever 34c simply has the shape of a plane strip of sheet metal, with another simple, but shorter strip of sheet metal 90 also being clamped between it and tongue 36. If lever 34c is adjusted with the aid of tongue adjusting screw 64a sheetmetal strip 90 transmits and reduces the adjustment path of adjusting screw 64a.
  • pin 42 has spherical ends for this purpose; in the second embodiment according to FIG. 2, the conical end oftongue adjusting screw 64a engages a correspondingly shaped recess in lever 34a, and in the embodiments according to FIGS. 3 and 4, tongue adjusting screw 64a has a spherical end.
  • first adjusting means on said movable end of the support arm opposite the electromagnet system for positioning said support arm relative to said pin means
  • second adjusting means acting near the clamped end of the tongue for positioning the tongue relative to the electromagnet system, said second adjusting means acting through reducation means.
  • said reduction means comprises a lever, one end of which is fixed relative to the supporting arm in the area of the fixed end of the tongue and arranged so that the second adjusting means is in a contacting relationship with its other end and is in an operative connection with the tongue between the ends of the tongue.
  • the buzzer set forth in claim 4 further having a fixedly clamped block arranged between support arm and tongue on the opposite side of the electromagnet system from the movable end of the support arm, characterized in that the lever is located on the side of the support arm facing away from the electromagnet system, in that the second adjusting element is in a contacting relationship with the support arm between the first adjusting element and the electromagnet system, and including a pin slidably located in said block which extends at roughly right angles to said tongue and extends through the support arm, with one end of the pin in a contacting relationship with the lever and the other end with the tongue.
  • lever is arranged between said tongue and said block and in that said second adjusting element is in a contacting relationship with said block.
  • said second adjusting element is a screw for which said block has a thread, and in that the screw is accessible through a hole in the support arm or engages therethrough.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)
US479713A 1973-07-05 1974-06-17 Electromagnetic buzzer for a watch with tongue adjustment means Expired - Lifetime US3863437A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2334153A DE2334153C2 (de) 1973-07-05 1973-07-05 Elektromagnetischer Summer für eine Kleinuhr

Publications (1)

Publication Number Publication Date
US3863437A true US3863437A (en) 1975-02-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
US479713A Expired - Lifetime US3863437A (en) 1973-07-05 1974-06-17 Electromagnetic buzzer for a watch with tongue adjustment means

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US (1) US3863437A (OSRAM)
JP (1) JPS5039582A (OSRAM)
AU (1) AU475663B2 (OSRAM)
BE (1) BE817297A (OSRAM)
CA (1) CA1011563A (OSRAM)
DE (1) DE2334153C2 (OSRAM)
DK (1) DK359274A (OSRAM)
FR (1) FR2236222B3 (OSRAM)
GB (1) GB1433439A (OSRAM)
HK (1) HK76776A (OSRAM)
NL (1) NL7409062A (OSRAM)
SE (1) SE389406B (OSRAM)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3977177A (en) * 1974-07-12 1976-08-31 Timex Corporation Electric alarm watch
US4167849A (en) * 1976-11-19 1979-09-18 Kabushiki Kaisha Daini Seikosha Watch with electronic buzzer
US4258432A (en) * 1978-11-10 1981-03-24 Ebauches S.A. Electro-acoustic device for alarm watch
US4271498A (en) * 1977-11-07 1981-06-02 Ebauches S.A. Watch
KR101365235B1 (ko) * 2012-03-21 2014-02-18 주식회사 세영마그윈 전자석식 부저
US20180259910A1 (en) * 2017-03-13 2018-09-13 Seiko Instruments Inc. Portable apparatus component fixation structure

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5661897A (en) * 1979-10-24 1981-05-27 Hitachi Ltd Display unit
CN115508978B (zh) * 2021-06-07 2025-06-13 北京航宇荣康科技股份有限公司 一种视景显示系统的薄膜虚像面形调整机构及工作方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2786326A (en) * 1951-07-05 1957-03-26 Junghans Geb Ag Alarm timepiece sounding device
US3462943A (en) * 1966-02-17 1969-08-26 Paolo A Spadini Alarm wristwatch

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2786326A (en) * 1951-07-05 1957-03-26 Junghans Geb Ag Alarm timepiece sounding device
US3462943A (en) * 1966-02-17 1969-08-26 Paolo A Spadini Alarm wristwatch

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3977177A (en) * 1974-07-12 1976-08-31 Timex Corporation Electric alarm watch
US4167849A (en) * 1976-11-19 1979-09-18 Kabushiki Kaisha Daini Seikosha Watch with electronic buzzer
US4271498A (en) * 1977-11-07 1981-06-02 Ebauches S.A. Watch
US4258432A (en) * 1978-11-10 1981-03-24 Ebauches S.A. Electro-acoustic device for alarm watch
KR101365235B1 (ko) * 2012-03-21 2014-02-18 주식회사 세영마그윈 전자석식 부저
US20180259910A1 (en) * 2017-03-13 2018-09-13 Seiko Instruments Inc. Portable apparatus component fixation structure

Also Published As

Publication number Publication date
SE7408732L (OSRAM) 1975-01-07
SE389406B (sv) 1976-11-01
DK359274A (OSRAM) 1975-02-24
CA1011563A (en) 1977-06-07
DE2334153B1 (de) 1974-09-26
GB1433439A (en) 1976-04-28
DE2334153C2 (de) 1975-05-22
NL7409062A (nl) 1975-01-07
AU7054474A (en) 1976-01-08
AU475663B2 (en) 1976-08-26
FR2236222A1 (OSRAM) 1975-01-31
JPS5039582A (OSRAM) 1975-04-11
FR2236222B3 (OSRAM) 1977-05-06
HK76776A (en) 1976-12-17
BE817297A (fr) 1974-11-04

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AS Assignment

Owner name: CHASE MANHATTAN BANK, N.A., THE

Free format text: SECURITY INTEREST;ASSIGNORS:TIMEX CORPORATION, A DE CORP.;TIMEX COMPUTERS LTD., A DE CORP.;TIMEX CLOCK COMPANY, A DE CORP.;AND OTHERS;REEL/FRAME:004181/0596

Effective date: 19830331